In the UK raw feeding can be such a contentious subject that I'm almost terrified of ever bringing it up around my vet. That being said, my dogs in the last couple of years have been fed raw in part and kibble in part, depending on multiple factors though normally my own health and ability to prepare their food.
One of my younger two had severe itching problems which improved with two things: firstly, I did a long process of removing various things from her diet to look for improvement, and her itching subsided when she no longer had access to chicken. Secondly, it seems she's sensitive to biological washing powder, so we switched to non-bio liquid and that's helped a lot.
When I feed kibble I avoid chicken, which is surprisingly difficult! James Wellbeloved do turkey kibble which they've done well on but they don't bound to their bowls and nom it right up - they pick when they're hungry.
Now when I feed them raw, they're climbing my legs to get at their bowls and diving in like they're starving, emerging licking at the meat on their snouts, burping happily, and cleaning the leftovers from each others ears.
When I decided to start preparing them raw myself I researched some dietary requirements, and as Rod suggested I contacted a holistic vet for some advice. But one of the most helpful things I found was looking at prepared raw diets that had received 5* ratings and investigating the ingredients. Two companies I use (UK based but still) were Nutriment and Wolf Tucker. As an example, here's the ingredients for Duck Nutriment:
British Duck with Bone, Fresh Carrots, Fresh Pumpkin, Fresh Broccoli, Fresh Green Curly Kale, Scottish Cold Water Salmon Oil, Organic Virgin Coconut Oil, Raw Sea Kelp Powder (Laminaria japonica), Bilberry Powder (Vaccinium Myrtillus), Spirulina Powder (Spirulina platensis), Wheat Grass Juice Powder, Barley Grass Juice Powder, Chicory Root Powder. Whole Milled Flaxseed, Whole Milled Sesame Seeds, Whole Milled Sunflower Seeds, Wheat Germ Oil (natural vitamin E)
For home prep I was adding carrot, kale, kelp supplement, cranberry, cod liver oil and a small amount of Bio-Cardio with CoQ10, amongst other veges occasionally but generally staying away from things like white potato.
There can be some rumours about dogs choking on bones and oh so much arguing about how dangerous bones are. Well, it does happen. Dogs can choke on bones. Naturally never feed cooked bone, and generally small, soft bones (chicken carcass for instance) tend to be safest. I give my guys lamb ribs as a chew and marrow bones as a real treat, the ribs tend to be very spongey and they chew them from the ends, only removing small amounts of bone at a time. Of course, dogs can also choke on kibble. I had the unfortunate experience of this myself, when one of my guys, I guess, inhaled during swallowing and got kibble lodged in his throat. When he couldn't dislodge it, husband had to stick his fingers down there to give him a hand. I suppose just eating comes with risks, no matter what it is!
As others have said, there could be other causes of his itching and you might want to take him for an allergen test or a skin scrape to find out what's wrong. If you do decide to feed raw then it can be very rewarding and I've yet to meet a dog who doesn't warm up to it, and there are prepared, well reviewed, well balanced diets if preparing it from scratch at home is overwhelming or takes up too much time.
Good luck!